Water tank waterproofing for rest houses & farms in Tabarjal

Prepared by the technical team · editorial review · last updated 13 November 2026 · Sources

Water tank waterproofing in Tabarjal: the local context

Team note on Tabarjal: Kashf teams serve this city and its nearby districts with the same documented inspection standard: device-based leak detection without demolition, a written report, and a clear scope before any work begins.. The centre of Tabarjal sits about 548 m above sea level (SRTM open elevation data).

Tabarjal sits at roughly 548 metres above sea level, which shapes how we approach water tank waterproofing for rest houses and farms in the area. Before any coating is discussed, the technician checks the tank's elevation context, the age of the structure, and whether the water supply is fed by gravity or by pump, because these factors influence pressure, overflow behaviour and the points where leaks usually start. A tank in a higher, exposed location can see larger temperature swings between day and night, so expansion and contraction are noted early. The first pass is always a dry inspection of the walls, floor, inlet and outlet fittings, and the overflow pipe, looking for hairline cracks, efflorescence, and staining that suggests water moving through the concrete.

The rest of the assessment is left to the site visit, where the technician confirms the tank's actual dimensions, the condition of the internal surface, and whether the existing coating is sound or needs removal. Rates vary with the method chosen: internal tank coating is typically SAR 25–60 per m², epoxy coating SAR 35–90 per m², and spray foam SAR 20–45 per m². Crack injection is priced separately at SAR 40–120 per metre, so the length of visible cracking matters to the final quote. Where a tank sits on or beside a ground-level slab, the technician may also compare costs against basement waterproofing at SAR 50–150 per m², though that work is outside a standard tank job. Any decision on method is made on site, once the surface has been tested for moisture and cleanliness.

To help the technician arrive prepared, it is useful to have the tank's approximate capacity, its construction material, the date of the last recoating if known, and photographs of any leaks taken during and after use. Note whether the tank serves drinking water, irrigation or both, as this changes the choice of coating. Clear access to the tank lid, ladder or manhole, and a reliable water source for testing, saves time on the day. Residents and farm managers who record when and where damp appears, and whether it worsens after heavy use, give the technician a far clearer picture before the first tool comes out.

Rest houses and farms often have long buried lines, tanks and irrigation that need separate tests.

Signs worth paying attention to

The following signs are worth checking before they grow:

• Deposits and flaking inside the tank
• A tank that leaks after testing
• Unusual colour or taste in the water

The most common causes

• Cracks in the walls or floor — we check this before anything else.
• Damaged old coating.
• Construction joints.

Tools and methods, and when we use them

How the work is done, step by step

1. Emptying and ventilation: The tank is emptied and ventilated before entry.
2. Cleaning and preparation: Loose material is removed down to a sound surface.
3. Crack treatment: Active cracks are treated first.
4. Coating layers: A material intended for drinking-water tanks is applied.
5. Disinfection and fill test: The tank is disinfected and the level is monitored after filling.

Tabarjal in facts and sources

Questions from Tabarjal

Common mistakes we see

• Using a material that is not intended for drinking water

What you get after the work

The written output: the material name, its batch number and the fill-test result. The report is numbered and can be checked with its verification code.